Front Usb Connectors: F_Usb1/ F_Usb2; Front Panel Audio Connector: F_Aud - MSI 915GM User Manual

M S-7177 M -ATX M ainboard

Front USB Connectors: F_USB1/ F_USB2

The mainboard provides two standard USB 2.0 pin headers JUSB5, 6 / JUSB7,
8. USB 2.0 technology increases data transfer rate up to a maximum throughput of
480Mbps, which is 40 times faster than USB 1.1, and is ideal for connecting high-
speed USB interface peripherals such as USB HDD, digital cameras, MP3 players,
printers, modems and the like.
9
10
F_USB1/ F_USB2
MSI Reminds You...
Note that the pins of VCC and GND must be connected correctly, or it
may cause some damage.

Front Panel Audio Connector: F_AUD

The F_AUD front panel audio connector allows you to connect to the front
panel audio and is compliant with Intel
PIN SIGNAL
1 AUD_MIC
2 AUD_GND
3 AUD_MIC_BIAS
4 AUD_VCC
5 AUD_FPOUT_R
6 AUD_RET_R
7 HP_ON
8 KEY
9 AUD_FPOUT_L
10 AUD_RET_L
MSI Reminds You...
If you don't want to connect to the front audio header,
pins 5 & 6, 9 & 10 have to be jumpered in order to have
signal output directed to the rear audio ports. Otherwise,
the Line-Out connector on the back panel will not
function.
2-20
Pin Definition
PIN SIGNAL
1 VCC
1
2
3 USB0-
5 USB0+
7 GND
9 Key
®
Front Panel I/O Connectivity Design Guide.
10
2
F_AUD
1 9
Pin Definition
DESCRIPTION
Front panel microphone input signal
Ground used by analog audio circuits
Microphone power
Filtered +5V used by analog audio circuits
Right channel audio signal to front panel
Right channel audio signal return from front panel
Reserved for future use to control headphone amplifier
No pin
Left channel audio signal to front panel
Left channel audio signal return from front panel
PIN SIGNAL
2 VCC
4 USB1-
6 USB1+
8 GND
10 USBOC
10
6
5
9